From c69fc844a011a41e027ce348af66c86b9a55c331 Mon Sep 17 00:00:00 2001
From: Aleksandar Andrejevic <aandrejevic@reactos.org>
Date: Sun, 22 Nov 2015 01:12:34 +0000
Subject: [PATCH 1/1] [CRT] Check for positive and negative infinity in exp().

svn path=/trunk/; revision=69998
---
 reactos/lib/sdk/crt/math/i386/exp_asm.s | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/reactos/lib/sdk/crt/math/i386/exp_asm.s b/reactos/lib/sdk/crt/math/i386/exp_asm.s
index 3dd5be060b9..fe2e214723b 100644
--- a/reactos/lib/sdk/crt/math/i386/exp_asm.s
+++ b/reactos/lib/sdk/crt/math/i386/exp_asm.s
@@ -11,6 +11,18 @@ _exp:
     mov ebp, esp
 
     fld qword ptr [ebp + 8]
+    fxam
+    fstsw ax
+    fwait
+    sahf
+    jnp .not_inf
+    jnc .not_inf
+    test ah, 2
+    jz .done
+    fstp st
+    fldz
+    jmp .done
+.not_inf:
     fldl2e
     fmul st, st(1)
     fst st(1)
@@ -22,7 +34,7 @@ _exp:
     faddp st(1), st
     fscale
     fstp st(1)
-
+.done:
     pop ebp
     ret
 
-- 
2.17.1